Structure and stratigraphy of Upper Cretaceous and Paleogene strata (North Horn Formation), eastern San Pitch Mountains, Utah — Sedimentation at the front of the Sevier orogenic belt
Timothy F. Lawton, Peter J. Talling, Robert S. Hobbs, James H. Trexler Jr., Malcolm P. Weiss, Douglas W. Burbank
1993, Bulletin 1787-II
No abstract available....
Ground-water-quality assessment of the Central Oklahoma Aquifer, Oklahoma: Geochemical and geohydrologic investigations
David L. Parkhurst, Scott C. Christenson, George N. Breit
1993, Open-File Report 92-642
The National Water-Quality Assessment pilot project for the Central Oklahoma aquifer examined the chemical and isotopic composition of ground water, the abundances and textures of minerals in core samples, and water levels and hydraulic properties in the flow system to identify geochemical reactions occurring in the aquifer and rates and...
Regional aquifers in Kansas, Nebraska, and parts of Arkansas, Colorado, Missouri, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming: Geohydrologic framework
Donald G. Jorgensen, John O. Helgesen, Jeffrey L. Imes
1993, Professional Paper 1414-B
Regional aquifers are described within a 370,000-square-mile area extending from the foothills of the Rocky Mountains in Colorado to the Missouri and Mississippi Rivers in eastern Nebraska and Missouri, and from South Dakota to the Ouachita, Arbuckle, and Wichita Mountains of Arkansas and Oklahoma. The present geohydrologic framework of aquifers and...
Paleozoic and Mesozoic rocks of Mount Ichabod and Dorsey Canyon, Elko County, Nevada: Evidence for post-Early Triassic emplacement of the Roberts Mountains and Golconda allochthons
Keith B. Ketner, Benita L. Murchey, Robert G. Stamm, Bruce R. Wardlaw
1993, Bulletin 1988-D
No abstract available....
Water resources and the hydrologic effects of coal mining in Washington County, Pennsylvania
Donald R. Williams, John K. Felbinger, Paul J. Squillace
1993, Open-File Report 89-620
Washington County occupies an area of 864 square miles in southwestern Pennsylvania and lies within the Pittsburgh Plateaus Section of the Appalachian Plateaus physiographic province. About 69 percent of the county population is served by public water-supply systems, and the Monongahela River is the source for 78 percent of the...
Statistics of petroleum exploration in the Caribbean, Latin America, Western Europe, the Middle East, Africa, non-communist Asia, and the southwestern Pacific
E. D. Attanasi, David H. Root
1993, Circular 1096
This circular presents a summary of the geographic location, amount, and results of petroleum exploration, including an atlas showing explored and delineated prospective areas through 1990. The data show that wildcat well drilling has continued through the last decade to expand the prospective area by about 40,000 to 50,000 square...
Geologic map of the Palo Alto and part of the Redwood Point 7-1/2' quadrangles, San Mateo and Santa Clara Counties, California
Earl H. Pampeyan
1993, IMAP 2371
The Palo Alto and southern part of the Redwood Point 7-1/2' quadrangles cover an area on the San Francisco peninsula between San Francisco Bay and the Santa Cruz Mountains. San Francisquito and Los Trancos Creeks, in the southeastern part of the map area, form the boundary between San Mateo and...
Water Resources Data, New York, Water Year 1992; Volume 1. Eastern New York; Excluding Long Island
Gary D. Firda, Richard Lumia, Patricia M. Murray
1993, Water Data Report NY-92-1
Water resources data for the 1992 water year for New York consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and ground water levels. This volume contains records for water discharge at 111 gaging stations; stage only at 4...
Petroleum exploration plays and resource estimates, 1989, onshore United States; Region 5, West Texas and eastern New Mexico
R.B. Powers, editor(s)
1993, Open-File Report 93-522
National Water Quality Assessment Program; preliminary assessment of nitrate distribution in ground water in the Georgia-Florida Coastal Plain study unit, 1972-90
M. P. Berndt
1993, Open-File Report 93-478
The U.S. Geological Survey has implemented the National Water Quality Assessment program to describe the quality of the surface- and ground- water resources in 60 large areas or study units in the Nation. The Georgia-Florida Coastal Plain study unit was one of the first 20 selected for study when the...
Dissolved nutrient and suspended particulate matter data for the San Francisco Bay estuary, California, October 1988 through September 1991
Stephen W. Hager
1993, Open-File Report 93-57
The U.S. Geological Survey conducted hydrologic investigations in San Francisco Bay during Water Years 1988, 1989, 1990 and 1991. Dissolved inorganic plant nutrients, nitrate, nitrite, ammonium, silica, and reactive phosphorus were measured in surface and in near-bottom waters at previously established locations in both northern and southern reaches of the...
Saltwater in shallow aquifers in east-central and northeastern Louisiana and southeastern Arkansas
G. F. Huff, J.P. Bonck
1993, Open-File Report 93-494
The chemistry of water from irrigation and monitor wells in east-central Louisiana indicates the presence of saltwater in the Mississippi River alluvial aquifer and the uppermost part of the Jasper aquifer system. The salinity of this groundwater makes it unsuitable for use in irrigation of salt-sensitive crops. The geochemistry of...
Hydrologic and water-quality data for the East River Basin in northeastern Wisconsin
P.E. Hughes
1993, Open-File Report 89-245
Hydrologic and precipitation data and water-quality samples were collected by the U.S. Geological Survey from rivers in the East River basin in northeastern Wisconsin during 1985-86. The Fox Valley Water Quality Planning Agency suspected that agricultural and urban nonpoint-source discharges were contributing significantly to the degradation of water quality in the...
Mineralogy, mineral chemistry, and paragenesis of gold, silver, and base-metal ores of the North Amethyst vein system, San Juan Mountains, Mineral County, Colorado
Nora K. Foley, Stanton W. Caddey, Craig B. Byington, David M. Vardiman
1993, Professional Paper 1537
Gold-rich adularia-sericite-type mineralization occurs near the southern margin of the San Luis caldera, at the intersection of the Equity fault and the northern extension of the Amethyst fault system. Mineralized rock is confined primarily to steeply dipping structures in silicified rhyolite and dacite. Intense sericitic alteration occurs at higher levels...
Mineralogical maps showing distribution of selected ore-related minerals in the nonmagnetic, heavy-mineral-concentrate fraction of stream sediment from the Mount Hayes 1 degree by 3 degrees Quadrangle, eastern Alaska Range, Alaska
Richard B. Tripp, Gary C. Curtin, Warren J. Nokleberg, David L. Huston, James R. Hampton
1993, Miscellaneous Field Studies Map 1996-E
Exploratory geochemical sampling was done in 1979, 1980, and 1981. The collection of composite samples of stream sediment or glacial debris was emphasized the first 2 years; the last year was spent collecting mineralized stream pebbles, float, and outcrop samples. The stream-sediment and heavy- mineral-concentrate samples were collected at 795...
Hydrogeology, geochemistry, and quality of water of The Basin and Oak Spring areas of the Chisos Mountains, Big Bend National Park, Texas
E. T. Baker Jr., P.M. Buszka
1993, Water-Resources Investigations Report 93-4112
Test drilling near two sewage lagoons in The Basin area of the Chisos Mountains, Big Bend National Park, Texas, has shown that the alluvium and colluvium on which the lagoons are located is not saturated in the immediate vicinity of the lagoons. A shallow aquifer, therefore, does not exist in...
Preliminary map showing the thickness and character of Quaternary sediments in the United States east of the Rocky Mountains
D. R. Soller
1993, Open-File Report 93-543
Sedimentation in Whitewater Lake, Union County, east-central Indiana, 1959-88
D.E. Renn
1993, Water-Resources Investigations Report 92-4113
Sedimentation has had little effect on the storage capacity or surface area of Whitewater Lake. The lake was constructed by damming Silver Creek in 1949 and was dredged during 1978-81 and 1984-88. At the dam, the drainage area of Silver Creek is 19.2 square miles. Locations where the largest amount...
Logs of exploratory trenches through liquefaction features on late Quaternary terraces in the Obion River Valley, northwestern Tennessee
Donald T. Rodbell, Lee-Ann Bradley
1993, Miscellaneous Field Studies Map 2218
From December 1811 to February 1812, four large earthquakes (mb≥7.0) occurred in the New Madrid (Missouri) Seismic Zone (NMSZ). These have been the largest historical earthquakes in eastern North America. Although this area has been the focus of considerable seismological research, estimates of the repeat time of large-magnitude seismic events...
Geologic map of the MTM 25057 and 25052 quadrangles, Kasei Valles region of Mars
David H. Scott
1993, IMAP 2208
Kasei Valles (fig. 1) make up the largest system of outflow channels on Mars and were a major contributor of water to Chryse Planitia. The walls and floors of the Kasei channe<span...
Distribution, facies, ages, and proposed tectonic associations of regionally metamorphosed rocks in east- and south-central Alaska
Cynthia Dusel-Bacon, Bela Csejtey Jr., Helen L. Foster, Elizabeth O. Doyle, Warren J. Nokleberg, George Plafker
1993, Professional Paper 1497-C
Most of the exposed bedrock in east- and south-central Alaska has been regionally metamorphosed and deformed during Mesozoic and early Cenozoic time. All the regionally metamorphosed rocks are assigned to metamorphic-facies units on the basis of their temperature and pressure conditions and metamorphic age. North of the McKinley and Denali...
Mineral resource assessment of the Absaroka-Beartooth study area, Custer and Gallatin national forests, Montana
M. L. Zientek, J. E. Elliott
J. M. Hammarstrom, Michael L. Zientek, J. E. Elliot, editor(s)
1993, Open-File Report 93-207
No abstract available. ...
Emplacement and differentiation of the york haven diabase sheet, Pennsylvania
M. T. Mangan, B.D. Marsh, A.J. Froelich, D. Gottfried
1993, Journal of Petrology (34) 1271-1302
Many of the high-Ti quartz-normative tholeiitic intrusive sheets in the early Mesozoic rift basins of the Eastern USA exhibit lateral differentiation from mafic cumulate units, through diabase, to relatively evolved iron-rich rock types. We have investigated a representative example in detail, the York Haven sheet in the Gettysburg basin of...
Deep Sea Drilling Project Site 612 bolide event: New evidence of a late Eocene impact-wave deposit and a possible impact site, U.S. east coast: Comment and reply
Wuchang Wei, C. Wylie Poag, Lawrence J. Poppe, David W. Folger, David S. Powars, Robert B. Mixon, Lucy E. Edwards, Scott Bruce
1993, Geology (21) 478-479
No abstract available....
Deformation from 1973 to 1987 in the epicentral area of the 1959 Hebgen Lake, Montana, earthquake (Ms = 7.5)
James C. Savage, Michael Lisowski, W.H. Prescott, A.D. Pitt
1993, Journal of Geophysical Research B: Solid Earth (98) 2145-2153
A 40‐km aperture trilateration network centered on the 1959 Hebgen Lake earthquake epicenter has been surveyed in 1973, 1974, 1976, 1978, 1981, 1984, and 1987. The deformation inferred from those surveys is described roughly by a uniaxial, 0.266 ± 0.014 μstrain/yr, N15°E ± 1°extension that is uniform in both time...
